PT-2021-7463 · Fortinet · Fortiweb

Published 2021-12-07 · Updated 2021-12-10 · CVE-2021-43071

Positive Technologies (AI Summary)

CVSS v2.0

10

High

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions FortiWeb versions 6.4.1 through 6.4.0 FortiWeb versions 6.3.15 and earlier FortiWeb versions 6.2.6 and earlier

Description A heap-based buffer overflow in FortiWeb allows an attacker to execute unauthorized code or commands via crafted HTTP requests to the "LogReport API controller". This issue is related to a buffer overflow in memory, which can be exploited by a remote attacker using a specially crafted HTTP request.

Recommendations For FortiWeb versions 6.4.1 and 6.4.0, update to a version that fixes the heap-based buffer overflow issue. For FortiWeb versions 6.3.15 and earlier, update to a version that fixes the heap-based buffer overflow issue. For FortiWeb versions 6.2.6 and earlier, update to a version that fixes the heap-based buffer overflow issue. As a temporary workaround, consider restricting access to the LogReport API controller until a patch is available.

Fix

Heap Based Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-122

CWE-787

Related Identifiers

BDU:2022-06512

CVE-2021-43071

Affected Products

Fortiweb

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-43071 · Security Note
• https://fortiguard.com/advisory/FG-IR-21-188 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-43071 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-06512 · Security Note
• https://t.me/cvenotify/24453 · Telegram Post